loading necessary packages

load data

Data processing - residual

Load other global Rh data

create a map

## Source : http://tile.stamen.com/terrain/2/0/0.png
## Source : http://tile.stamen.com/terrain/2/1/0.png
## Source : http://tile.stamen.com/terrain/2/2/0.png
## Source : http://tile.stamen.com/terrain/2/3/0.png
## Source : http://tile.stamen.com/terrain/2/0/1.png
## Source : http://tile.stamen.com/terrain/2/1/1.png
## Source : http://tile.stamen.com/terrain/2/2/1.png
## Source : http://tile.stamen.com/terrain/2/3/1.png
## Source : http://tile.stamen.com/terrain/2/0/2.png
## Source : http://tile.stamen.com/terrain/2/1/2.png
## Source : http://tile.stamen.com/terrain/2/2/2.png
## Source : http://tile.stamen.com/terrain/2/3/2.png

## Adding missing grouping variables: `model`

Rh by month in different models

Site scale comparison

## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'linetype' is already present. Adding another scale for 'linetype',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'linetype' is already present. Adding another scale for 'linetype',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'linetype' is already present. Adding another scale for 'linetype',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.
## Scale for 'colour' is already present. Adding another scale for 'colour',
## which will replace the existing scale.

Use histgram to show the t-test results